org.apache.hadoop.hbase.regionserver.querymatcher

类 CompactionScanQueryMatcher

java.lang.Object

org.apache.hadoop.hbase.regionserver.querymatcher.ScanQueryMatcher

org.apache.hadoop.hbase.regionserver.querymatcher.CompactionScanQueryMatcher

所有已实现的接口:

ShipperListener

直接已知子类:

DropDeletesCompactionScanQueryMatcher, MinorCompactionScanQueryMatcher

@InterfaceAudience.Private
public abstract class CompactionScanQueryMatcher
extends ScanQueryMatcher

Query matcher for compaction.

嵌套类概要

从类继承的嵌套类/接口 org.apache.hadoop.hbase.regionserver.querymatcher.ScanQueryMatcher

ScanQueryMatcher.MatchCode

字段概要

字段

限定符和类型	字段和说明
protected DeleteTracker	deletes Keeps track of deletes
protected KeepDeletedCells	keepDeletedCells whether to return deleted rows
protected long	maxReadPointToTrackVersions readPoint over which the KVs are unconditionally included

从类继承的字段 org.apache.hadoop.hbase.regionserver.querymatcher.ScanQueryMatcher

columns, currentRow, now, oldestUnexpiredTS, rowComparator, startKey

构造器概要

构造器

限定符	构造器和说明
protected	CompactionScanQueryMatcher(ScanInfo scanInfo, DeleteTracker deletes, ColumnTracker columnTracker, long readPointToUse, long oldestUnexpiredTS, long now)

方法概要

限定符和类型	方法和说明
void	beforeShipped() The action that needs to be performed before Shipper.shipped() is performed
static CompactionScanQueryMatcher	create(ScanInfo scanInfo, ScanType scanType, long readPointToUse, long earliestPutTs, long oldestUnexpiredTS, long now, byte[] dropDeletesFromRow, byte[] dropDeletesToRow, RegionCoprocessorHost regionCoprocessorHost)
Filter	getFilter()
Cell	getNextKeyHint(Cell cell) Delegate to Filter.getNextCellHint(Cell).
boolean	hasNullColumnInQuery()
boolean	isUserScan()
boolean	moreRowsMayExistAfter(Cell cell)
protected void	reset()
protected void	trackDelete(Cell cell)

从类继承的方法 org.apache.hadoop.hbase.regionserver.querymatcher.ScanQueryMatcher

checkDeleted, clearCurrentRow, compareKeyForNextColumn, compareKeyForNextRow, createStartKeyFromRow, currentRow, getKeyForNextColumn, getStartKey, getTrackers, match, preCheck, setToNewRow

从类继承的方法 java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

字段详细资料

maxReadPointToTrackVersions

protected final long maxReadPointToTrackVersions

readPoint over which the KVs are unconditionally included

deletes

protected final DeleteTracker deletes

Keeps track of deletes

keepDeletedCells

protected final KeepDeletedCells keepDeletedCells

whether to return deleted rows

构造器详细资料

CompactionScanQueryMatcher

protected CompactionScanQueryMatcher(ScanInfo scanInfo,
                                     DeleteTracker deletes,
                                     ColumnTracker columnTracker,
                                     long readPointToUse,
                                     long oldestUnexpiredTS,
                                     long now)

方法详细资料

beforeShipped

public void beforeShipped()
                   throws IOException

从接口复制的说明: ShipperListener

The action that needs to be performed before Shipper.shipped() is performed

指定者:

beforeShipped 在接口中 ShipperListener

覆盖:

beforeShipped 在类中 ScanQueryMatcher

抛出:

IOException

hasNullColumnInQuery

public boolean hasNullColumnInQuery()

指定者:

hasNullColumnInQuery 在类中 ScanQueryMatcher

返回:

whether there is an null column in the query

isUserScan

public boolean isUserScan()

指定者:

isUserScan 在类中 ScanQueryMatcher

moreRowsMayExistAfter

public boolean moreRowsMayExistAfter(Cell cell)

指定者:

moreRowsMayExistAfter 在类中 ScanQueryMatcher

返回:

Returns false if we know there are no more rows to be scanned (We've reached the stopRow or we are scanning on row only because this Scan is for a Get, etc.

getFilter

public Filter getFilter()

指定者:

getFilter 在类中 ScanQueryMatcher

返回:

the Filter

getNextKeyHint

public Cell getNextKeyHint(Cell cell)
                    throws IOException

从类复制的说明: ScanQueryMatcher

Delegate to Filter.getNextCellHint(Cell). If no filter, return null.

指定者:

getNextKeyHint 在类中 ScanQueryMatcher

抛出:

IOException

reset

protected void reset()

指定者:

reset 在类中 ScanQueryMatcher

trackDelete

protected final void trackDelete(Cell cell)

create

public static CompactionScanQueryMatcher create(ScanInfo scanInfo,
                                                ScanType scanType,
                                                long readPointToUse,
                                                long earliestPutTs,
                                                long oldestUnexpiredTS,
                                                long now,
                                                byte[] dropDeletesFromRow,
                                                byte[] dropDeletesToRow,
                                                RegionCoprocessorHost regionCoprocessorHost)
                                         throws IOException

抛出:

IOException